A little boy opens a box at night and night slips out to brings with it shadows and nighttime things. When the night is tired and the boy opens the box, night goes back in and day slips out.

The text is descriptive and soothing. Darkness tumbles into the air. It dances and whirls around the room. It goes under the bed, under the chair – everywhere! Hello, Night! Max laughs. 

The illustrations complement the text with their calming colors.

The book is described as a reassuring bedtime book, but I can see it being used for descriptive language and visualization lessons.